Amory: Fiske Prize Dissertation, No. 34, p. 1884.
Dixon, A. S.: Proceedings of the Academy of Natural Sciences,
Philadelphia, Nov. 11, 1884.

[55] Reynolds, H. S.: Jour. A. M. A., May 30, 1914, LXII, p. 1723.

[56] Annual Report of the Commissioner of Internal Revenue, 1914, p. 34,
Government Printing Office, Washington, D. C.

* * * * *

Bamberger, J.: _Hygiene of Cigar Smoking_, Abstr. Jour. A. M. A., 1904,
XLIII, p. 706; Zur Hygienie des Rauchens, Munchen. med. Wchnschr., 1904,
LI, pp. 1344-1345.

Current Comment: _Some New Evidence on the Tobacco Question_, Jour.
A. M. A., 1912, LIX, p. 1798.

Editorial: _The Pharmacology of Tobacco Smoke_, Jour. A. M. A.. 1909,
LII, p. 386.

Editorial: _The Use of Tobacco_, Jour. A. M. A., 1910, LX, p. 32.

Editorial: _Tobacco-Smoking and Circulation_, Jour. A. M. A., 1914,
XLII, p. 461.

Hochwart, L. Von Frankl: _Die Nervoesen, Erkrankungen der Tabakraucher_,
Deutsch. med. Wchnschr., 1911, XXXVII, pp. 2273, 2321.

Index Catalogue of the Library of the Surgeon-General's Office, second
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Larrabee, R. C.: _Tobacco and the Heart_, Abstr. Jour. A. M. A., 1903,
XLI, p. 50. Read before the Massachusetts Medical Society, June, 1903.

Pel: _Un cas de psychose tabagique_, Ann. med. Chir., 1911, XIX,
p. 171.

SECTION VI

AVOIDING COLDS

[Sidenote: Infection]

Bacteria play a part in most colds. In some cases there is a general
infection, with local symptoms, as in grippe; in others there is a local
infection, with mixed classes of bacteria. It is probable that these
various forms of bacteria are constantly present in the nasal
secretions, but do not cause trouble until the local resistance or the
general resistance is in some way lowered.

[Sidenote: Nasal Obstruction]

In many, the susceptibility to colds is due to abnormalities in the nose
or throat. Nasal obstruction is a very common condition. The nose, like
the eye, is usually an imperfect organ. These obstructions are often the
result of adenoids in childhood, which interfere with the proper
development of the internal nasal structures. Malformation of the teeth
and dental arches in childhood are frequent and often neglected causes
of nasal obstruction. Such malformations are caused by the arresting of
the growth of the upper jaw and nasal structures. Correction of the
deformity of the arches often renders nasal surgery unnecessary. Such
conditio